In situ peelable protective barrier films

Abstract

A water emulsion and film are provided comprising a polyacrylate random copolymer synthesized from acrylic acid (AA), butyl acrylate (BA), methyl methacrylate (MMA), and 2-ethylhexyl acrylate (EHA). The emulsion may be applied to a surface in liquid form, quickly drying to yield a peelable protective barrier film.

We claim: 
     
       1. An emulsion comprising:
 (i) a bimodal acrylic random copolymer comprising polymeric subunits consisting of: 
 a first polymeric subunit, 
 
       
         
           
           
               
               
           
         
       
       present between 1 to 5 wt %+/−0.5 wt %;
 a second polymeric subunit, 
 
       
         
           
           
               
               
           
         
       
       present between 21 to 41 wt %+/−0.1 wt %;
 a third polymeric subunit, 
 
       
         
           
           
               
               
           
         
       
       present between 27 to 57.5 wt %+/−0.1 wt %; and
 a fourth polymeric subunit, 
 
       
         
           
           
               
               
           
         
       
       present between 19 to 34 wt %+/−0.1 wt %, wherein the acrylic random copolymer is present in the emulsion between 40 to 55 wt %;
 (ii) water, wherein the water is present in the emulsion between 44 to 59 wt %; 
 (iii) a buffer present in an amount effective to maintain a pH between 4 and 10; and 
 (iv) a non-ionic surfactant present between 0.1 and 1.0 wt %. 
 
     
     
       2. The emulsion of  claim 1 , wherein the buffer is selected from one or more of bicarbonate; phosphate; citrate; glycine; borate; 2-amino-2-methyl-1,3-propanediol; N,N-bis(2-hydroxyethyl)taurine; 4-(2-hydroxyethyl)-1-piperizine ethanesulfonic acid; imidazole; 3-morpholinopropane-1-sulfonic acid; 3-{[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]aminol}propane-1-sulfonic acid; or 2[[1,3-dihydroxy-2-(hydroxymethyl)propan-2-yl]amino]ethanesulfonic acid; and N-(2-hydroxy-1,1-bis (hydroxymethyl)ethyl)glycine. 
     
     
       3. The emulsion of  claim 1 , wherein the non-ionic surfactant is a 1,4-aryl comprising an aliphatic substituent between C5 and C16 and a polyethylene oxide substituent chain between 4 and 20 polyethylene oxide units long. 
     
     
       4. The emulsion of  claim 3 , wherein the aliphatic substituent comprises between C7 and C10, and the polyethylene oxide substituent chain is between 6 and 10 polyethylene oxide units long. 
     
     
       5. The emulsion of  claim 3 , wherein the polyethylene oxide substituent chain is from 9 to 10 polyethylene oxide units long. 
     
     
       6. The emulsion of  claim 1 , further comprising an effective amount of an antiseptic preservative. 
     
     
       7. The emulsion of  claim 6 , wherein the antiseptic preservative is selected from the group consisting of benzalkonium chloride, benzethonium chloride, chlorhexidine gluconate, chloroxylenol, hexylresorcinol, mercufenol chloride, methylbenzethonium chloride, secondary amyltricresols, sodium oxychlorosene, triclocarban, triclosan, hexachlorophene and tribromsalan. 
     
     
       8. The emulsion of  claim 1 , further comprising an additive selected from the group consisting of aloe, an essential oil, mineral oil, petrolatum, lanolin, dimethicone, hyaluronic acid, or glycerin. 
     
     
       9. The emulsion of  claim 1 , further comprising limonene, vanillin, or an essential oil. 
     
     
       10. The emulsion of  claim 1 , further comprising an effective amount of denatonium benzoate as a bittering agent. 
     
     
       11. The emulsion of  claim 1 , further comprising an effective amount of a colorant.